You know who else was probably rated horribly his rookie season; Paul Solai. And he just pissed on your logic.
Players develop. It happens all the time.
Martin will give you everything he has. Feet aren't terrible. Obviously a smart guy.
But on the NFL level he looks like a 7-9 player. That's the inescapable conclusion. Loses balance frequently. Not naturally strong. Handful of truly disastrous plays when he steps up in class. His college coach wasn't effusive in praise.
The idea was to trend in the other direction, to finally sprinkle the roster with great players here or there. Martin seems like more of the same.
We need to give this kid some time to turn his boyish body to an NFL starting lineman. He is definitely soft around the edges but give him an off season of NFL conditioning and he could turn into a stud right before our eyes. The footwork and mechanics are there. He just lacks upper body strength which could be improved upon with good weight training.
A- Martin was a rookie who held his own according to my eye ball test..dating back to Stanford.
B- He has the frame.
C- He certainly has the brains.
D- Ireland might have issues identifying and pulling the trigger for playmakers at skill positions, but i more than trust his eye for big men.